A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5930-00-104-6148
NSN 5999-01-272-9684
NSN 5930-01-572-7112
NSN 5925-00-610-1273
NSN 6645-01-459-2350
NSN 6685-00-930-8035
NSN 6135-00-299-6918
NSN 2925-01-503-6792
NSN 5910-00-281-2449
NSN 6685-01-199-9109
NSN 6610-01-641-7834
NSN 5915-01-049-3198